Security drill on the Salish

During a drill, SWAT team members step over a downed "terrorist" while clearing the ship Monday, Oct. 29, 2012, aboard the Washington State ferry M.V. Salish, out of Bainbridge Island, Wash. In winds that kicked up whitecaps and drenched the small boarding boats, the U.S. Coast Guard and several police agencies drilled for a potential terrorist attack on a state ferry Monday by sending SWAT teams aboard the ferry while under sail on Puget Sound between Vashon Island and Everett, Wash. In addition to the Coast Guard, the drill involved Washington State Patrol troopers, King County sheriff's deputies and Seattle police. (AP Photo/Elaine Thompson)

A U.S. Coast Guard boat kicks up a spray of sea water as it approaches the Washington State ferry M.V. Salish, out of Bainbridge Island, Wash., Monday, Oct. 29, 2012. In winds that kicked up whitecaps and drenched the small boarding boats, the U.S. Coast Guard and several police agencies drilled for a potential terrorist attack on a state ferry Monday by sending SWAT teams aboard the ferry while under sail on Puget Sound between Vashon Island and Everett, Wash. In addition to the Coast Guard, the drill involved Washington State Patrol troopers, King County sheriff's deputies and Seattle police. (AP Photo/Elaine Thompson)

During a drill, SWAT team members step over a downed "terrorist" while clearing the ship Monday, Oct. 29, 2012, aboard the Washington State ferry M.V. Salish, out of Bainbridge Island, Wash. In winds that kicked up whitecaps and drenched the small boarding boats, the U.S. Coast Guard and several police agencies drilled for a potential terrorist attack on a state ferry Monday by sending SWAT teams aboard the ferry while under sail on Puget Sound between Vashon Island and Everett, Wash. In addition to the Coast Guard, the drill involved Washington State Patrol troopers, King County sheriff's deputies and Seattle police. (AP Photo/Elaine Thompson)

A King County Sheriff's helicopter flies in view of a flag flying Monday, Oct. 29, 2012, aboard the Washington State ferry M.V. Salish, out of Bainbridge Island, Wash. In winds that kicked up whitecaps and drenched the small boarding boats, the U.S. Coast Guard and several police agencies drilled for a potential terrorist attack on a state ferry Monday by sending SWAT teams aboard the ferry while under sail on Puget Sound between Vashon Island and Everett, Wash. In addition to the Coast Guard, the drill involved Washington State Patrol troopers, King County sheriff's deputies and Seattle police. (AP Photo/Elaine Thompson)

During a drill, SWAT team members disembark the Washington State ferry M.V. Salish while under sail via a U.S. Coast Guard boat Monday, Oct. 29, 2012, out of Bainbridge Island, Wash. In winds that kicked up whitecaps and drenched the small boarding boats, the U.S. Coast Guard and several police agencies drilled for a potential terrorist attack on a state ferry Monday by sending SWAT teams aboard the ferry while under sail on Puget Sound between Vashon Island and Everett, Wash.The all-day training exercise, six months in the planning, involved up to 100 people from the Coast Guard, Washington State Patrol, King County sheriff's office and Seattle police. (AP Photo/Elaine Thompson)